Flask



Aug. 23,

c. D. BARR 1,873,176

FLASK Filed Sept. 23, 1951 INVENTOR. CL flf PE/VCE 0. BARR ATTORNEY Patented Aug. 23, 1932 A CORPORATION OF DIELAVFAL BE FLASK,

Application filed September 23, 1931.: Serial No. 564,689.

My present invention relates to certain new and useful improvements n flasks for use n connection with centrifugal castmg machines I for casting hollow tubular bodies such as cast ironbell and spigot pipes for and water mains, and the like,' although flasks made in accordance with the present inven-- tion may or may not have bell and spigot ends.

The flask of the present invention is constructed and designed for themanufacture of pipes of relatively large diameter as, for instance, a diameter of 14 inchesand larger and of relatively long length, as for instance 16 feet or longer, although I do not wish t9 be understood as limiting myself as to the size.

Flasks of the typeforming the subject I matter of this applioationare usually provided with a refractory lining, suchas a lining of appropriatelyrammed sand or sand mixtures, and the wall of the flask is perforated for venting purposes during the centrifugal casting operation.

Flasks of the kind referred to usually weigh a ton or more depending upon the size of the pipe to be made therein, and one of v the objects of the invention is to provide a.

flask with means which will permit the same to be readily transported to'and from the casting machine by an overhead crane and grapple, said means permitting the flask to be somanipulated that it may be readily stood on its end to permit the sand lining to be rammed therein and topermit the drying thereof andto enable the flask to depos ted in a horizontal position in the casting machine,it being understood that with flasks of this type a. freshlyprepared flask is em ployed with each cast. r V W Another object of the invention is to provide a flask for centrifugal casting machines that is made up of a plurality of sections so constructed and arranged that they may be easily assembled into a single unit and wherein any one of the flask sections may be readily renewed in the event of breakage or damage to such section and without being compelled to discard anentire flask in centrifugal casting machine.

the event a aged.

A further object of the invention is to provide a flask of the type referred to with a novel construction of annular ring or track constituting the supporting means for the flask when in position for rotation in the To these and other ends the invention resides in the combinations and arrangement of. parts hereinafter described in detail and then more particularly pointedv out in the appended claims. r I p In order to enable others skilled in the art to manufacture and use 'my'said inven tion I will now proceed to describe the same in detaiLreference being had for this pur pose to the accompanying drawing, where-v I. c Fig. 1 is a longitudinal section ofa flask made in accordance with the invention;

Fig. 2 is an end view spigotend of the flask;

Fig. 3 is a transverse section line 3+3. of Fig. 1; and Fig. Jai s an end view looking intothe bell taken on the Referring'more particularly to. Fig; Ifof the drawing it will be seen that the flask consists. of three separate sections, 1,.2fand 3,'the section l being the spigot end, the intermediate section,'and 3 the bell end section. which is outwardly flared both exteriorly and interiorly as shown. y

The. section 1 is provided at'the end adjacent section 2 with an annular flange 4; the section 2 is provided at each endwith an annular flange 5, and the section 3 is prof vid'ed'at its end adjacent section: 2 with a flange 6. Between each ofthe sections 1 and 2 is arranged an annular T shaped ring 7, the flange 8 of each ring flttingbetween the flanges ofthe sections 1, 2 and 3, the sa-idflanged sections being connected-to the rings 7 by means of bolts 9 or othersuitable looking I into the" PATENT OFFICE GLARENCE D. IBARR, OF BIRMINGHAM, ALABAMA,

CORPORATION, OF WILMINGTON, DELAWARE,

portion thereof should be damconnecting means. The outer surface or rim: of each ring 7 is trulycylindrical and presents a smooth circular surface to rest upon two pairs of flask-supporting. rollers sections of cast steel.

14, to prevent (not shown) forming a part of the centrifugal casting machine.

I prefer to make the intermediate section 2 of the flask of cast iron and the two end A reason for this is to give the flask greater strength at its ends where it 1s subjected to the greatest strains in the transportation thereof as hereinafter described and without likelihood of'break-' outwardly from the spigot end toward the bell end to facilitate'the removal of the casting with its refractory sand lining, these.

skids or tracks-as is customary with the.

smaller and lighter flasks. To accomplish this I provide my flask with means at each endthereof to receive suitable hooks or other grapples carried by and suspended from the,

overhead lifting and transporting crane. ,As will be seen by referring to the drawthe spigot end, with oppositely arranged outstanding trunnions 10,'each trunnion being carried by a plate 12, which is secured to the flask by bolts or rivets 13, the free end of eachtrunnionbeing preferably flanged as at the engaglng'hook from slippingendwise there-from when brought into engagement therewith. I prefer to provide two pairs of oppositely arranged trunnions although in some instances I may employ only one pair. I

At'the bell end of the flask I provide oppositely arranged plates 15, each having flanges 16, riveted-t0 the flask, and each plate is provided with an eye or opening 17, toreceive a supporting hook suspended from and carried by the overhead crane. When it is desired to transport the flask either toward or from the centrifugalcasting machine, it is only necessary to engage the suspended hooks with a pair of the trunnions 10, and arsingle hook in theeye or opening 17, ofone of the plates 15, andlifting. the flask a suflicient distance tojremove it from the castingmachin'e, it

may then be transported while maintained in the horizontal position, and due to the arrangement of thetrunnions and eye plates,

one end of the flask, as, for instance, the bell end, may be lowered while maintaining the elevatlon' or by raising the spigot end until e; w I I The flask sections may be cast either cen-, trifugally or otherwise, and I prefer to make the inner wall thereof gradually tapering I provide one end of the flask,namely,

by which they plates may be bolted or th flask assumes a perpendicular position,

' thus enabling it to be deposited in an upright or in any position desired. I prefer to provide the bell end of the flask with two pairs of oppositely arranged eye plates corresponding with the trunnions 10 at the opposite end of the flask so that irrespective of the position of the flask in the machine an eye plate and a pair of trunnions will be in posi- Ltion tobe engaged by the grapples .orcarrying hooks.

The walls of the flask sections 12 and 13 are provided throughout their length with suitable vent openings which are usually counterbored at their outer ends, said openings serving to permit free venting of the flask during the centrifugalcasting operation. r

While I have illustrated and described a preferred embodiment of my invention,I do

not wish to be understood as limiting myself.

to the specific constructionshown except as I may be limited by the terms 'of the ap pended claims, as obviously changes may be made without'departingfr'om the spirit of the invention.

What I'claim is: 1 1. A flask for usein centrifugal casting machines, comprising an intermediate and end sections, and cylindrical treadringsconnecting said sections in end-to-end relationship, the outer surface of said rings constituting supporting treads. w i

2. A flask'for use-in centrifugal casting machines, comprising an intermediate and end sections and a pair of flanged tread rings connecting said sections in end-to-end rela-. tionship, each of said rings having a cylindrieal outer surface constituting a support, ing tread.

3. A flask machines, comprising; an intermediate'and end sections arranged in end-to-end relationship, each section having an annular flange and flanged tread rings connecting said sections, each ring having a cylindrical outer surface constituting a supporting tread.

4;. A flask for use in centrifugal casting machines comprising a cast iron intermediate section and cast steel end sections, and tread rings connecting said sections in end-to-end relationship, said rings each having a cylindrical outer surface constituting supporting treads. I

5. A flask for use in centrifugal casting machines comprising an intermediate and end sections, and connecting tread rings substantially T-shaped in cross sections connecting said sections in end-to-end relationship, each ring having a cylindrical outer surface constituting a support tread.

for usein centrifugal casting 6. A flask for use 1n centrifugal casting sections and means for connecting the said rings and sections, each ring having an outer cylindrical surface constituting a tread for rolling contact with supporting rollers.

7 A flask for use in centrifugal casting machines, comprising an intermediate and end sections arranged end to end, each section having an annular flange, annular rings between the adjacent ends of said sections, each ring having a cylindrical tread rim overlying its associated flanges and a web located between the flanges, and means for connecting the flanges and webs, said tread rims adapted to support the flask for rotation.

8. A flask for use in centrifugal casting machines, comprising an intermediate and end sections, cylindrical tread rings connecting said sections in end-to-end relationship, the outer surface of each ring constituting a supporting tread, oppositely-disposed trunnions at one end of the flask and outwardly extending apertured plates at the other end, said trunnions and plates constituting means for engagement by transporting grapples.

Signed at Birmingham in the county of J eflerson and State day of September A. D. 1931.

CLARENCE D. BARR.

of Alabama this 17th 7 

